Rotary cooling apparatus



N. F. FoNr-:R 2,641,064-

ROTARY COOLING APPARATUS June 9, 1953 Filed Dec. 26, 1951 2 SheeCS-Sheetl l BY/OMMf//wz .June 9, 1953 N. F. FONER 2419054 ROTARY COOLING APPARATUS Filed Dec. 26, 1951 2 Sheets-Sheerl 2 5 INVENTOR.

A/Ewo/VA Fax/E2 Patente-d June 9, 41953 ROTARY COOLING APPARATUS Newton F. Foner, Pittsburgh, Pa., assignor to United States Steel Corporation, a corporation of New Jersey Application December 26, 1951, Serial No. 233,149

4 Claims. 1

This invention relates to improvements in rotary cooling apparatus, such -as are used for cooling sintered materials and the like.

An object of the invention is to provide an improved rotary cooling apparatus which has means for circulating air around the mass of material cooling thereon, thereby furnishing more effective heat extraction.

A further object is to provide an improved rotary cooling apparatus which has -sloping support means for the mass of material, thereby promoting uniformity of cooling and facilitating discharge of the cooled mass.

A further object is to provide an improved rotary cooling apparatus in which the rotary element adapted to carry the mass of material is supported directly beneath the load carrying portion.

In accomplishing these and other objects of the invention, I have provided improved details of structure, a single form yof which is shown in the accompanying drawings, in which:

Figure 1 is a top plan view with parts broken away of an improved rotary cooling apparatus embodying features of the present invention;

Figure 2 is a horizontal sectional view of the apparatus, taken on line II-II of Figure 3; and

Figure 3 is 'a vertical sectional view taken substantially on line III-III of Figure l.

The apparatus comprises an lannular table I which has a rather steeply sloping inner portion Illa and a less steeply sloping outer portion I lib, both of which slope `outwardly from the center. The table has double walls, between which lare mounted a system of -partitions and bales hereinafter descri-bed. Beneath said walls the table has a framework I2 and a sub-framework I3 (Figure 3). The un-derside of the latter carries a track I4 and a ring gear I5 which encircle the bottom ofthe table. Track I4 rides on `and is supported by a series of rollers I6 which are mounted on fixed pedestals I'I. Thus the supporting means is situated directly .under the load supporting portion of the table. The apparatus has a drive motor I8, speed reducing gears I9, a line shaft 20, and a pinion 2l which meshes with ring gear I for rotating the table (Figures l and 3).

I-Iot material M, such as sinter, which is to be cooled is fed to the table from 4a chute 22 and subsequently is removed by a scraper or plow 23. In the present example rotation of the table is clockwise as viewed from above, although it is apparent that rotation Icould be the other wat7 if the positions of the chute and scraper were reversed. The material remains on the table for about 330 of its rotation. The sloping top of the table furnishes ample support for the material and yet enables it to be removed by a simple scraper as illustrated. The arrangement also promotes cooling by furnishing maximum exposure of the material to the surrounding atmosphere.

A blower 24 and a drive motor 25 therefor are situated within the open central region of table III. Said Iblower discharges air into a swivel duct 2B which is concentric with the table (Figure 2). A plurality of radial ducts 21, in this instance three, extend from duct 28 and are connected to transverse ducts 28 on the table. The space between the ldouble walls of the table contains radial partitions 29 that extend the full width and thus divide this space into separate cooling compartments, in this instance twelve in number. Each cooling compartment is shown as containing a baiile 30 which extends inwardly from the outer circumference of the table and a pair of baiiles 3| which extend outwardly from adjacent the inner circumference and thus dene a sinuous path, although obviously the exact baiile arrangement can vary. Each of the transverse ducts 28 has at its ends inlet ttings 32 leading to two of the cooling compartments. To assist the air ow through the compartments, the table can be equipped with arcuate Ibai-lies 33 spaced from the ends of the baiiles 3|.

The mid-portion of each cooling compartment has lan outlet fitting 34. These :fittings are situated adjacent the inner circumference of the table at the top of the steeply sloping inner portion I0a. They direct air downwardly over the top of the mass of material M.

In operation, the table IIJ is rotated at a relatively slow speed by the drive motor I8 through the associated shafts and gearing. Material M is fed continuously to the table through chute 22 and subsequently removed by scraper 23. The table is supported on rollers IB which rare situated directly `beneath the mass of material. The blower 24 continuously blows air for cooling the material through ducts 26, 2'I and 28 and inlets 32 into the cooling compartments defined by the double walls of the table and the partitions 29. Within the compartments this air travels through the sinuous course which baffles 20 and 3l dene and thus extracts heat from the underside of the material. The air discharges through the outlet ttings 3l and thus further extracts heat from the top of the material. The material is eectively cooled by the time it reaches the scraper 23.

While I have shown and described only a single embodiment of the invention, it is apparent that modifications may arise. Therefore, I do not wish to be limited to the disclosure set `forth but only by the scope of the appended claims.

I claim:

1. A rotary cooling apparatus comprising an annular double-walled sloping table adapted t support a mass of material for cooling, means rotatably supporting said table, drive means for rotating said table, a system of partitions and bailles between the double walls of said table defining air courses having inlets and outlets, a swivel duct concentric with said table, ducts connecting said swivel duct with the inlets to said air courses, and means for supplying air to said swivel duct, the outlets from said air courses being situated adjacent the inner circumference of said table and arranged to direct the air downwardly over the table top.

2. An apparatus as defined in claim 1 in which said partitions divide the space between the double walls of the table into a plurality of separate cooling compartments and said baffles denne air courses within said compartments.

3. A rotary cooling apparatus comprising a doubie-walled table adapted to support a mass of material for cooling, means rotatably supporting said table, drive means for rotating said table, a system of partitions and bales between the double Walls of said table dening air courses, inlets and outlets connected to said air courses, and means for supplying air to the inlets of said air courses, the outlets from said air courses being situated above the top of said table and directed downwardly to discharge air against material supported on said table.

4. A rotary cooling apparatus comprising an annular double-walled table having a steeply sloping inner portion and a less steeply sloping outer portion, means for feeding material to be cooled to the top of said table, a scraper spaced from said feeding means for removing the material from the table, means rotatably supporting said table directly under the portion which supports the material, drive means for rotating said table, partitions between the double walls of said tabe dividing the space therebetween into a plurality of compartments, baffles in said compartments defining sinuous air courses having inlets and outlets, a swivel duct concentric with said table, ducts connecting said swivel duct with the inlets to said air courses, and means for supplying air to said swivel duct, the outlets from said air courses being situated adjacent the inner circumference of said table and being adapted to direct air downwardly over the table top.

NEWTON F. FONER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 321,636 Penniman July 7, 1885 943,691 Marshall Dec. 21, 1909 949,719 Schroder Feb. 15, 1910 1,673,464 McLaughlin June 12, 1928 1,690,444 Dobblestein Nov. 6, 1928 2,480,726 Greyson Aug, 30, 1949 

